KaiOS alternatives

Ranked alternatives

1. 1
   
   CopperheadOSFree

   CopperheadOS is an Operating System for mobile phones that provides enhanced protection to Android devices. It is mainly used as an OS for Google Pixel devices and has its own exclusive store known as the F-Droid store. Among many of its features is the ability to utilize different passwords for opening the lock of the device.

   Its primary objective is to increase the security capabilities of the Android OS to shield it from any potential hacks. For this purpose, it adds countless security walls that the hacker has to crush to access the system, which ultimately leads them to give up their pursuit.

   CopperheadOS includes tremendous security enhancements as compared to base Android. It uses PaX security updates to increase the shield levels to defend against intruding code. Other key features include verified boot, which protects against any virus that may have gained control of the boot process of the smartphone. It also uses a variant of malloc to optimize the memory structure of the device.

   CopperheadOS splits the encryption and unlocking passwords of a device. Smartphone owners can use an easy-to-remember password to access their device; however, typing an incorrect password five times in a row will lead to an automatic restart, after which the encryption password has to be entered correctly to gain access.

   CopperheadOS alternatives
2. 2
   
   LineageOSFree

   LineageOS is a high-performance Operating system for multiple devices. It is based on Android and enables users to customize the features to their liking. It adds several security tools like Privacy Guard that allow the user to control the behavior of their apps. To improve security, it continuously releases updates to all devices. Furthermore, it provides a highly secure lock screen to block unrestricted access to the device.

   LineageOS is currently used by over 20 manufacturers worldwide to power their systems. It has many open source apps that help users in their everyday activities. They can unlock the potential of their device using Unix command-line utilities. It offers APIs to assist Android developers in designing high-quality apps for supported devices.

   LineageOS comes preloaded with apps that help users accomplish routine tasks. These apps include Trebuchet, AudioFX, Music, Email, Browser, Recorder, Calculator, Calendar, FlipFlap, Gallery, Messaging, Camera, Contact Directory, Phone, Radio, Files, and more.

   LineageOS alternatives
3. 3
   
   GrapheneOSFree

   GrapheneOS is an operating system based on Android for Google Pixel smartphones, including Pixel 3 & 3 XL, 3a & 3a XL, 4 & 4 XL, and more. It uses a robust security model to increase the security and privacy of the system to fight against any threat. The main emphasis of the project is to improve the usability and app compatibility of the device.

   It features a verified boot that enhances security and reduces overall threats. It utilizes LTE-only mode to decrease cellular radio attacks by deactivating legacy content. Users can set passwords of up to 64 characters and turn on the Fingerprint unlock to improve efficiency and block unrestricted access to their device.

   Furthermore, Fingerprint unlock will automatically turn off the smartphone after five failed attempts. GrapheneOS provides tons of other cool features, including PDF viewer, Authenticated encryption, Powerful app sandbox, Hardened kernel & compiler toolchain, Pin scrambling, Vanadium, and more.

   GrapheneOS alternatives
4. 4
   
   Ubuntu TouchFree

   Ubuntu Touch is a replica of the Ubuntu Operating System for smartphones. It is developed and maintained by the UBports community. It has an appealing UI that is coded in Qt and is greatly enjoyable on touchscreen devices.

   Ubuntu Touch provides its users a lot of essential features to help them in their tasks. Each app within the OS will require to be opened via a lock screen whenever necessary. The welcome screen shows the amount of activity on the smartphone. It displays several things, such as the current status of the user, past actions, and all the activities performed in the previous month.

   The Operating System is pre-loaded with major applications, including a terminal, full-fledged calculator, clock, file manager, e-mail app, and more. The team behind the OS regularly releases new applications to enhance the user experience. Furthermore, most of the applications can also run on the desktop, such as Weather, Browser, Notes, Reminders, Clocks, Terminal, and more.

   Ubuntu Touch alternatives
5. 5
   
   Android NougatFree

   Android Nougat is the seventh iteration released by Google for the Android Operating System. It came with several major features, one of which was the ability to view multiple apps side-by-side simultaneously. This characteristic allowed the user to accomplish various tasks in a short time. Other features that came with this version were improved power-saving functionality and inline response to notifications. It uses OpenJDK, which enables it to utilize the highly efficient Vulkan graphics API.

   Android Nougat improved the User Experience by revamping the notifications bar. It also updated the emoji library and enabled the user to use multiple languages simultaneously. The most liked quality was the Multi-window view, making it easier to swap between apps by tapping the screen two times. This feature made multitasking much easier than before.

   The Operating System provided 3D textures in games, thanks to the Vulkan API, which enhances the sharpness of the display. Another top feature is the VR mode which allowed the user to experience Virtual Reality like never before. Android Nougat preserves smartphone battery through Doze mode. This mode instructs the device to consume less power when it’s not being used. It also introduced more features such as Custom Quick Settings that lets the user change places of icons and Notification Direct Reply that enables them to respond to received messages.

   Android Nougat alternatives
6. 6
   
   Android 10Free

   Android 10 is the tenth upgrade available for devices running the Android Operating System. Its main talking point is the gesture system and animations. The gesture system allowed the user to accomplish various tasks by performing gestures. Swiping from the edge of the screen resulted in the opening of the previous display, while Swipe in the upper direction leads to the home screen. The user could also launch the Google Assistant by doing a diagonal swap.

   The OS introduced a dark mode that would change the GUI into black. It enhanced the device’s security by enabling the user to prevent the apps from accessing information such as location data and deciding which app should be allowed to run in the background.

   Besides improving security, Android 10 features a Live caption, which automatically shows the text of any video running on the device. It also captions audio replies, videos, and podcasts without requiring an Internet connection. Users can quickly respond to messages through Smart Reply, an intelligent recommendation system that shows actions. Other features included within the OS are Sound Amplifier, Family Link, Focus mode, Location controls, Security Updates, and more.

   Android 10 alternatives
7. 7
   
   Android Jelly BeanFree

   Android Jelly Bean is the tenth upgrade for mobiles using the Android Operating System. It was released in three cycles, with version 4.1 being the first and version 4.3.1 being the final. Version 4.1 added significant improvements, including speed, responsiveness, and changes to the notification functionality. The next update was released in Version 4.2, which further enhanced the functionality of the OS by providing widgets for lock screen, screen savers, and instant settings.

   Android Jelly Bean as a whole introduces massive improvements to the Android Platform. It offers Restricted profiles for tablets to allow the user to control the limitation of apps at the office and residence. This feature enables parents/guardians to use parental controls for restricting the activities of their kids, whereas retailers can transform their tablet device into a full-fledged kiosk.

   Users can connect fitness sensors with their devices thanks to Bluetooth Smart support. This feature consumes low power and supports major sensors like Runtastic, Fitbit, Google Fit, RunKeeper, and others, enabling increased efficiency for smartphones or tablets. The Operating System also adds autocompletion for the dial pad, which recommends numbers that are being typed. Lastly, People who speak Hebrew and Arabic will find better support for their languages.

   Android Jelly Bean alternatives
8. 8
   
   Android LollipopFree

   Android Lollipop is the successor to Android KitKat and adds major changes to the Android mobile operating system. It was released in several iterations, with version 5.5.1 being the last to launch. It improved the visual appeal of the User Interface through the usage of Material Design, which gave it a paper-like style. Besides UI, Google enhanced the notification system by allowing users to interact with messages on the lock screen. Battery performance was also improved along with applications to give a seamless experience.

   Apart from the Phone and Tablet, Android Lollipop also features support for Cars, TV, and watches. It saves users’ progress so that they can resume their activity from any device. The OS allows users to enable/disable devices that can display notifications and restrict specific contacts from sending messages.

   Android Lollipop includes a battery saver functionality that increases the battery strength to 90 minutes before dying. It also shows important information such as the time left before the phone turns off and the duration for maximum charging. Lastly, users can grant access to the device to their friends by creating separate accounts for them to log in.

   Android Lollipop alternatives
9. 9
   
   Android KitKatFree

   Android KitKat is an operating system for mobile devices released to the public on September 3, 2013. Its main goal is to increase the efficiency of the operating system to run comfortably on entry-level devices. It adds several enhancements, including an attractive User Interface along with high performance and other improvements. Users can achieve many tasks such as sending messages, finding directions or starting a song through Voice Commands.

   Any media playing on the device can be interacted with on the lock screen, which shows the song’s name, album, cover, and actions like pause, play and stop. This feature allows the user to switch to the next song within the album or stop it entirely by touching their lock screen. The Operating system introduces an Immersive mode which allows the reader to dive deeper into their book by removing the status bar and buttons from the interface.

   Android KitKat enables the user to interact with several apps simultaneously with faster multitasking. Users can bring up all the apps running in the background, which are displayed in sequential order, and their names so that the user can open the required one, perform the necessary action and then jump back to the previous app without any delays.

   Android KitKat alternatives
10. 10
    
    BlackBerry OSFree

    BlackBerry OS is the official and the only operating system for Blackberry devices. It enables multitasking and delivers complete support for input devices used in the BlackBerry phones, such as the trackball, touchscreen, trackwheel, and trackpad. The OS provides all the necessary apps to aid the user in everyday tasks. These apps include contacts, calendar, notes, tasks, corporate email, Novell Groupwise email, and more.

    The current version of the BlackBerry OS is BlackBerry 10, which introduces key improvements to enhance the user experience. It offers BlackBerry Flow to enable the user to move from one app to another instantly. Another great feature is BlackBerry Hub which gathers everyday activities and displays them on a single screen to help users manage them with great ease. The OS also includes BlackBerry Hub to allow users to view the unread messages from their social media accounts, email, and text messages and then quickly resume their previous tasks.

    BlackBerry OS alternatives